Click on the third or sixth rank to set the en passant target square.

EGTB: win in 4 half-moves

# move score
1 Kb2 win in 3 half-moves
2 Kd3 win in 3 half-moves
3 Kc2 win in 9 half-moves
4 Kd2 win in 9 half-moves
5 Rb4 win in 9 half-moves
6 Kb1 draw
7 Kc4 draw
8 Kd1 draw
9 Ke3 draw
10 Ke5 draw
11 Ra1 draw
12 Ra3 draw
13 Ra5 draw
14 Ra6 draw
15 Rc4 draw
16 Kc3 loss in 2 half-moves
17 Kc5 loss in 2 half-moves
18 Kd5 loss in 2 half-moves
19 Ra2 loss in 2 half-moves
20 Ra7 loss in 2 half-moves
21 Ra8 loss in 2 half-moves
22 Ke4 loss in 1 half-moves